WO2002008130A1 - Corps en verre - Google Patents

Corps en verre Download PDF

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Publication number
WO2002008130A1
WO2002008130A1 PCT/EP2001/006171 EP0106171W WO0208130A1 WO 2002008130 A1 WO2002008130 A1 WO 2002008130A1 EP 0106171 W EP0106171 W EP 0106171W WO 0208130 A1 WO0208130 A1 WO 0208130A1
Authority
WO
WIPO (PCT)
Prior art keywords
raw body
glass
air
raw
cooling
Prior art date
Application number
PCT/EP2001/006171
Other languages
German (de)
English (en)
Inventor
Horst Schillert
Ralf Bauenfeind
Dirk Rössler
Hendrik Alfter
Original Assignee
Schott Glas
Carl-Zeiss-Stiftung Trading As Schott Glas
Carl-Zeiss-Stiftung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schott Glas, Carl-Zeiss-Stiftung Trading As Schott Glas, Carl-Zeiss-Stiftung filed Critical Schott Glas
Priority to AU2001272440A priority Critical patent/AU2001272440A1/en
Publication of WO2002008130A1 publication Critical patent/WO2002008130A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/06—Tempering or quenching glass products using gas for glass products other than flat or bent glass plates, e.g. hollow glassware, lenses

Definitions

  • the invention relates to the production of two- or three-dimensional glass bodies, in particular glass wash basins.
  • the invention has for its object to provide a method with which two- or three-dimensional glass bodies can be produced, which have a significantly higher thermal and mechanical strength compared to known glass bodies. This object is solved by the features of the independent claims.
  • the inventors have described a new way to solve the problem. Accordingly, they suggest adding heat to the preformed vitreous body for a certain period of time, beyond the transformation point (softening point), and then cooling the vitreous body again. It is crucial that the cooling takes place gently and extends over a longer period of time.
  • the decisive element here is an air shower.
  • Ring-shaped supports are particularly suitable as support bodies for a three-dimensional glass body. In the case of spherical glass bodies, supports with circular contact surfaces are available. There is one
  • the process is suitable for glasses of any kind. Lime-soda glasses with a thickness of more than 4 mm are particularly suitable.
  • the size of the vitreous doesn't matter. The diameter can be, for example, 200 mm or 1000 mm.
  • the shape of the vitreous body can be spherical, parabolic, cylindrical or other.
  • the duration of the temperature influence depends on the glass thickness, the size of the body, the geometry and possibly also its color.
  • the duration and the temperature during the heating phase should be selected in such a way that no undue deformation of the vitreous body occurs.
  • the subsequent cooling takes place with an air shower.
  • the air shower is used for the targeted and even dissipation of heat from the glass surfaces.
  • the arrangement, the distance between the air nozzle and the surface of the glass body and the air flow rate are based on the geometry of the
  • the process of cooling should be a little faster with thin glasses than with thick ones, so that an optimal pressure pre-stress can build up on the outer glass surfaces.
  • the inventive thermal prestressing the glass used to a kind of safety glass are converted. They are significantly more resistant to impact, impact and bending stresses as well as thermal loads.
  • the vitreous bodies are heated to about 100 ° C above the transformation temperature and then quenched with cold air. This treatment effectively freezes the glass surfaces. This means that a pressure preload is built up. The surfaces are under compressive stress, while the inside of the glass body is under tensile stress.
  • the glass disintegrates into a large number of small pieces that are more or less loosely connected.
  • a glass treated according to the invention has a very safe breaking behavior, in contrast to normally cooled glass. This opens up completely new areas of application for vitreous bodies, thus expanding the area of application as a whole.
  • the raw body can be produced using all conventional methods. Blowing or sinking can be used. In the lowering process, an essentially flat product made of glass is first produced, and then this product is given the hollow shape by appropriate treatment, for example by means of pressure or negative pressure.
  • Blowing or sinking can be used.
  • an essentially flat product made of glass is first produced, and then this product is given the hollow shape by appropriate treatment, for example by means of pressure or negative pressure.
  • Figure 1 shows a perspective view of a glass bowl as a three-dimensional body.
  • Figure 2 illustrates a schematic representation of a device for cooling and a hemispherical body to be cooled.
  • the bowl 1 shown in Figure 1 is made of glass. It was produced according to the method according to the invention.
  • the shell has an essentially flat bottom 1.1. It also has a peripheral wall 1.2 which essentially corresponds to the contour of a car tire.
  • a three-dimensional glass body 1 can again be seen in FIG. 2. This is exactly hemispherical.
  • a cooling device 2 can also be seen. This comprises three elements, namely an upper cooling device 2.1 and two lower ones
  • Cooling devices 2.2, 2.3 The cooling devices have outer surfaces which face the glass body 1. See the outer surfaces 2.1.1, 2.2.1 and 2.3.1. These outer surfaces have holes.
  • the heating devices 2.1, 2.2, 2.3 are hollow. The interior each has a compressed air connection, not shown here.
  • the compressed air connection is in conductive connection with the bores mentioned, so that air jets emerge at the appropriate time, which are illustrated by arrows.
  • the mentioned outer surfaces 2.1.1, 2.2.1, 2.3.1 are also spherical, just like the glass body 1 itself.
  • the heating devices are on the Glass body 1 can be approached in such a way that the distance between the outer surface of the heating device in question on the one hand and the surface of the glass body 1 to be blown on the other hand is the same at every point.
  • the outer surfaces of the heating device would also have to be made ellipsoid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

L'invention concerne un procédé pour fabriquer un corps en verre en deux ou trois dimensions. Afin d'augmenter les résistances mécanique et thermique d'un tel corps brut, l'invention comporte les opérations suivantes : on fabrique un corps brut en verre; ce corps brut est chauffé et porté à une température supérieure au point de transformation du verre utilisé; le corps brut est refroidi; le refroidissement est effectué au moyen d'une douche d'air à effet de nappe; la disposition et le débit d'air de la douche, ainsi que l'espacement entre la surface du corps brut à refroidir et les buses de la douche sont calculés de manière à ce que l'évacuation de la chaleur du corps brut (2) soit homogène.
PCT/EP2001/006171 2000-07-21 2001-05-31 Corps en verre WO2002008130A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001272440A AU2001272440A1 (en) 2000-07-21 2001-05-31 Glass body

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10035573.0 2000-07-21
DE2000135573 DE10035573A1 (de) 2000-07-21 2000-07-21 Glaskörper

Publications (1)

Publication Number Publication Date
WO2002008130A1 true WO2002008130A1 (fr) 2002-01-31

Family

ID=7649759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/006171 WO2002008130A1 (fr) 2000-07-21 2001-05-31 Corps en verre

Country Status (3)

Country Link
AU (1) AU2001272440A1 (fr)
DE (1) DE10035573A1 (fr)
WO (1) WO2002008130A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10219079A1 (de) * 2002-04-29 2004-01-08 Minimax Gmbh Verfahren zum Herstellen von Glasampullen und Vorrichtung zur Magazinierung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206082B4 (de) * 2002-02-13 2004-12-09 Ce-Sys Gmbh Ilmenau Glas mit gehärteter Oberflächenschicht und Verfahren zu seiner Herstellung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR800531A (fr) * 1935-01-17 1936-07-07 Pilkington Brothers Ltd Procédé et appareil perfectionnés de trempe d'objets en verre
DE645699C (de) * 1935-06-21 1937-06-02 Chauny & Cirey Vorrichtung zum Haerten von Gegenstaenden, insbesondere solchen aus Glas
US2254227A (en) * 1937-04-22 1941-09-02 Corning Glass Works Glass tempering method and apparatus
US2376872A (en) * 1942-10-20 1945-05-29 Holophane Co Inc Glass treatment process
US2519059A (en) * 1943-09-10 1950-08-15 Hartford Empire Co Apparatus for and method of cooling glass articles
FR1033128A (fr) * 1950-03-01 1953-07-08 Saint Gobain Procédé et dispositif pour la trempe de la verrerie de table et spécialement des pièces décorées présentant une résistance élevée
GB846467A (en) * 1956-10-05 1960-08-31 Nat Res Dev Method of and apparatus for prestressing glass articles
FR2038466A5 (en) * 1969-03-13 1971-01-08 Tubes Electroniques Thermal strengthening of hollow glass - bodies
DE1596365A1 (de) * 1965-05-12 1971-04-29 Cie Belgo Luxembourgeoise Du C Verfahren und Vorrichtung zur Waermebehandlung,insbesondere von Hohlglas
GB2320712A (en) * 1996-12-26 1998-07-01 Asahi Glass Co Ltd Method of producing a glass panel for a cathode ray tube by sequential cooling, then heating, then cooling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001944C2 (de) * 1980-01-21 1982-04-29 Schott Glaswerke, 6500 Mainz Verfahren zum thermischen Vorspannen von Glas
FR2514749A1 (fr) * 1981-10-16 1983-04-22 Saint Gobain Vitrage Trempe thermique de feuilles de verre
NL8500985A (nl) * 1985-04-03 1986-11-03 Heineken Technische Beheer Bv Werkwijze en stelsel voor het herstellen van mechanische en/of chemische beschadigingen aan het oppervlak van voor hergebruik bestemde flessen.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR800531A (fr) * 1935-01-17 1936-07-07 Pilkington Brothers Ltd Procédé et appareil perfectionnés de trempe d'objets en verre
DE645699C (de) * 1935-06-21 1937-06-02 Chauny & Cirey Vorrichtung zum Haerten von Gegenstaenden, insbesondere solchen aus Glas
US2254227A (en) * 1937-04-22 1941-09-02 Corning Glass Works Glass tempering method and apparatus
US2376872A (en) * 1942-10-20 1945-05-29 Holophane Co Inc Glass treatment process
US2519059A (en) * 1943-09-10 1950-08-15 Hartford Empire Co Apparatus for and method of cooling glass articles
FR1033128A (fr) * 1950-03-01 1953-07-08 Saint Gobain Procédé et dispositif pour la trempe de la verrerie de table et spécialement des pièces décorées présentant une résistance élevée
GB846467A (en) * 1956-10-05 1960-08-31 Nat Res Dev Method of and apparatus for prestressing glass articles
DE1596365A1 (de) * 1965-05-12 1971-04-29 Cie Belgo Luxembourgeoise Du C Verfahren und Vorrichtung zur Waermebehandlung,insbesondere von Hohlglas
FR2038466A5 (en) * 1969-03-13 1971-01-08 Tubes Electroniques Thermal strengthening of hollow glass - bodies
GB2320712A (en) * 1996-12-26 1998-07-01 Asahi Glass Co Ltd Method of producing a glass panel for a cathode ray tube by sequential cooling, then heating, then cooling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10219079A1 (de) * 2002-04-29 2004-01-08 Minimax Gmbh Verfahren zum Herstellen von Glasampullen und Vorrichtung zur Magazinierung
DE10219079B4 (de) * 2002-04-29 2004-06-03 Minimax Gmbh Verfahren zum Herstellen von Glasampullen

Also Published As

Publication number Publication date
DE10035573A1 (de) 2002-02-07
AU2001272440A1 (en) 2002-02-05

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